1 heavy rain, as filed by the National Weather Service.
Every event with a place to put it; 1 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Honolulu, HI wrote its last area forecast discussion before the first event at May 13, 8:30 PM HST, 2 hours 35 minutes earlier.
HAWAIIAN ISLANDS FORECAST DISCUSSION NATIONAL WEATHER SERVICE HONOLULU HI 830 PM HST THU MAY 13 2004 .SYNOPSIS... LIGHT WINDS WILL BECOME NORTHERLIES ACROSS THE WESTERN ISLANDS SATURDAY THROUGH LATE MONDAY AS A TROUGH DRIFTS EASTWARD THROUGH THE ISLAND CHAIN...THEN BACKTRACKS. WINDS OVER THE EASTERN ISLANDS WILL REMAIN LIGHT THROUGH THE FORECAST PERIOD. LOW CLOUDS AND SHOWERS WILL FAVOR THE AFTERNOONS AND EVENINGS...THEN DECREASE EACH NIGHT. SHOWERS MAY BECOME HEAVY AT TIMES...ESPECIALLY OVER THE WESTERN AND CENTRAL PORTIONS OF THE CHAIN. && .DISCUSSION... HAWAIIAN WEATHER THROUGH THE MIDDLE OF NEXT WEEK WILL BE GOVERNED BY A SURFACE TROUGH EXPECTED TO MOVE IN FROM THE WEST LATE FRIDAY...STALL NEAR MAUI AND THE BIG ISLAND THROUGH MONDAY...THEN BACKTRACK ACROSS THE WESTERN ISLANDS AS IT WEAKENS THROUGH THE REST OF THE FORECAST PERIOD. A LONGWAVE UPPER TROUGH IS EXPECTED TO SET UP WEST OF KAUAI...NORTH TO SOUTH ROUGHLY ALONG 170W. SHORTWAVE TROUGHS WILL PASS THROUGH THIS FEATURE FOR THE NEXT FIVE OR SIX DAYS...KEEPING THE SURFACE TROUGH OVER THE ISLANDS ACTIVE. OVERCAST LAYERED CLOUDS WEST OF THE MAIN ISLANDS ARE MASKING THE LONG-FORECAST FORMATION OF A SURFACE LOW. GFS SHOWS THIS LOW WILL FORM JUST WEST OF KAUAI TONIGHT AND MOVE RAPIDLY NORTH THROUGH THE WEEKEND. THE TROUGH EXPECTED TO GOVERN OUR WEATHER IS ASSOCIATED WITH THIS LOW. WHILE PREVIOUS DISCUSSIONS CENTERED MAINLY AROUND THE CONTINUED LIGHT WINDS FOR THE EASTERN ISLANDS...AND THE INTRUSION OF POST-TROUGH NORTHERLIES ACROSS THE WESTERN ISLANDS THIS WEEKEND...WE NOW NEED TO LOOK AT THE PROBABILITY OF SUSTAINED HEAVY RAINFALL AND THE POSSIBILITY OF FLOODING. NOGAPS AND GFS ARE IN GOOD AGREEMENT WITH THE ARRIVAL AND STALLING OF THE SURFACE TROUGH. BOTH MODELS PAINT A SUSTAINED PRECIPITATION BAND OVER THE ISLANDS THROUGH MIDWEEK NEXT WEEK...WITH BURSTS OF ACTIVITY AS SHORTWAVE UPPER TROUGHS PASS THROUGH THE LONGWAVE TROUGH WEST OF THE ISLANDS. IT NOW APPEARS THAT THE CENTRAL ISLANDS WILL RECEIVE THE BULK OF ANY HEAVY RAINFALL DURING THE EARLY AND MIDDLE PARTS OF THE NEXT WORK WEEK. THE WESTERN ISLANDS WILL BEGIN GETTING WET TOMORROW...BUT THE TROUGH WILL BE MOVING SOUTHEASTWARD THROUGH THE WEEKEND AND RAINFALL OVER KAUAI MAY ACTUALLY BEGIN TO DECREASE AFTER SUNDAY. THE FORECAST FOCUS OF ANY HEAVY RAINFALL MAY CHANGE ACCORDING TO WHERE THE SURFACE TROUGH ACTUALLY STALLS...OR IF THE LONGWAVE UPPER TROUGH SETS UP FARTHER EAST OR WEST THAN CURRENTLY FORECAST. IN SHORT...A WET WEATHER PATTERN IS POISED TO AFFECT THE MAIN HAWAIIAN ISLANDS THROUGH THE WEEKEND AND MOST OF NEXT WEEK. STAY TUNED... && .WATCHES/WARNINGS/ADVISORIES... NONE. POWELL
The national radar mosaic for the moment the first event began.
1 heavy rain. Local standard time, as filed.
The eastern half of Kauai, including coastal and mauka sections, saw heavy showers that produced drainage ditch and small stream flooding and ponding of roadways. There were no reports of serious injuries or property damage.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Hawaii in 2004Every state in 2004This day in weather historyWarnings in Hawaii, May 2004
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 5431472.